(variant of precop that rhymes with prenup) A mutually binding verbal agreement by and between consenting adults prior to engaging in casual sex. The agreement stipulates that all involved parties are exonerated from emotional attachment, post coital contact, and any promise of future sex. Any and all disputes arising from said contract are futile.

Q: So, are you going to call her today?
A: No, that would be a violation of our preshtup.